purgespecific pages varnish script

http://giantdorks.org/alain/a-shell-script-to-refresh-a-predefined-set-of-pages-in-varnish-cache/

cmd="sudo varnishadm -T 127.0.0.1:6082 -S /etc/varnish/secret"
site="http://www.htpcguides.com"
pages="
/
/feed
"
 
echo -----------------------------
echo Purging old pages from cache
echo -----------------------------
for page in $pages; do 
 $cmd purge.url "^$page\$" | sed '/^$/d' 
 $cmd purge.list | head -n 1
done
 
echo ---------------------------------------
echo Populating cache with new page content
echo ---------------------------------------
for page in $pages; do 
 curl -sL -w "%{http_code} %{url_effective}\n" $site/$page -o /dev/null
done